From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:45:59 +0200
Subject: Adding upstream version 16.2.11+ds.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/rgw/rgw_fcgi_process.cc | 137 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 src/rgw/rgw_fcgi_process.cc

(limited to 'src/rgw/rgw_fcgi_process.cc')

diff --git a/src/rgw/rgw_fcgi_process.cc b/src/rgw/rgw_fcgi_process.cc
new file mode 100644
index 000000000..3851afd52
--- /dev/null
+++ b/src/rgw/rgw_fcgi_process.cc
@@ -0,0 +1,137 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab ft=cpp
+
+#include "common/errno.h"
+#include "common/Throttle.h"
+#include "common/WorkQueue.h"
+
+#include "rgw_rest.h"
+#include "rgw_frontend.h"
+#include "rgw_request.h"
+#include "rgw_process.h"
+#include "rgw_loadgen.h"
+#include "rgw_client_io.h"
+#include "rgw_client_io_filters.h"
+
+#define dout_subsys ceph_subsys_rgw
+
+void RGWFCGXProcess::run()
+{
+  string socket_path;
+  string socket_port;
+  string socket_host;
+  int socket_backlog;
+
+  conf->get_val("socket_path", "", &socket_path);
+  conf->get_val("socket_port", g_conf()->rgw_port, &socket_port);
+  conf->get_val("socket_host", g_conf()->rgw_host, &socket_host);
+  socket_backlog = g_conf()->rgw_fcgi_socket_backlog;
+
+  if (socket_path.empty() && socket_port.empty() && socket_host.empty()) {
+    socket_path = g_conf()->rgw_socket_path;
+    if (socket_path.empty()) {
+      dout(0) << "ERROR: no socket server point defined, cannot "
+	"start fcgi frontend" << dendl;
+      return;
+    }
+  }
+
+  if (!socket_path.empty()) {
+    string path_str = socket_path;
+
+    /* this is necessary, as FCGX_OpenSocket might not return an
+	 * error, but rather ungracefully exit */
+    int fd = open(path_str.c_str(), O_CREAT, 0644);
+    if (fd < 0) {
+      int err = errno;
+      /* ENXIO is actually expected, we'll get that if we try to open
+	   * a unix domain socket */
+      if (err != ENXIO) {
+		  dout(0) << "ERROR: cannot create socket: path=" << path_str
+				  << " error=" << cpp_strerror(err) << dendl;
+		  return;
+      }
+    } else {
+		close(fd);
+    }
+
+    const char *path = path_str.c_str();
+    sock_fd = FCGX_OpenSocket(path, socket_backlog);
+    if (sock_fd < 0) {
+      dout(0) << "ERROR: FCGX_OpenSocket (" << path << ") returned "
+	      << sock_fd << dendl;
+      return;
+    }
+    if (chmod(path, 0777) < 0) {
+      dout(0) << "WARNING: couldn't set permissions on unix domain socket"
+	      << dendl;
+    }
+  } else if (!socket_port.empty()) {
+    string bind = socket_host + ":" + socket_port;
+    sock_fd = FCGX_OpenSocket(bind.c_str(), socket_backlog);
+    if (sock_fd < 0) {
+      dout(0) << "ERROR: FCGX_OpenSocket (" << bind.c_str() << ") returned "
+	      << sock_fd << dendl;
+      return;
+    }
+  }
+
+  m_tp.start();
+
+  FCGX_Request fcgx_reqs[max_connections];
+
+  QueueRing<FCGX_Request*> qr(max_connections);
+  for (int i = 0; i < max_connections; i++) {
+    FCGX_Request* fcgx = &fcgx_reqs[i];
+    FCGX_InitRequest(fcgx, sock_fd, 0);
+    qr.enqueue(fcgx);
+  }
+
+  for (;;) {
+    RGWFCGXRequest* req = new RGWFCGXRequest(store->getRados()->get_new_req_id(), &qr);
+    dout(10) << "allocated request req=" << hex << req << dec << dendl;
+    req_throttle.get(1);
+    int ret = FCGX_Accept_r(req->fcgx);
+    if (ret < 0) {
+      delete req;
+      dout(0) << "ERROR: FCGX_Accept_r returned " << ret << dendl;
+      req_throttle.put(1);
+      break;
+    }
+    req_wq.queue(req);
+  }
+
+  m_tp.drain(&req_wq);
+  m_tp.stop();
+
+  dout(20) << "cleaning up fcgx connections" << dendl;
+
+  for (int i = 0; i < max_connections; i++) {
+    FCGX_Finish_r(&fcgx_reqs[i]);
+  }
+} /* RGWFCGXProcess::run */
+
+void RGWFCGXProcess::handle_request(RGWRequest* r)
+{
+  RGWFCGXRequest* const req = static_cast<RGWFCGXRequest*>(r);
+
+  RGWFCGX fcgxfe(req->fcgx);
+  auto real_client_io = rgw::io::add_reordering(
+                          rgw::io::add_buffering(cct,
+                            rgw::io::add_chunking(
+                              &fcgxfe)));
+  RGWRestfulIO client_io(cct, &real_client_io);
+
+ 
+  int ret = process_request(store, rest, req, uri_prefix,
+                            *auth_registry, &client_io, olog,
+                            null_yield, nullptr);
+  if (ret < 0) {
+    /* we don't really care about return code */
+    dout(20) << "process_request() returned " << ret << dendl;
+  }
+
+  FCGX_Finish_r(req->fcgx);
+
+  delete req;
+} /* RGWFCGXProcess::handle_request */
-- 
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